And Lord Ouseley says the incident should serve as a message to the whole of football to avoid complacency in it's fight against prejudice.

"We know that prejudice is on the increase and that in itself leads to hateful attitudes and this sort of conduct," Ouseley told PA .

Chairman: Lord Ouseley says Kick It Out will support any action against the disgraced fans (Photo: BPM)

"I was shocked that Chelsea fans were still behaving like this. I thought the club had made it quite clear and taken action about stopping any repetition, knowing Chelsea, how hard they've worked on these matters, with fans as well as players, that it was unlikely to occur.

"The fact it involved an assault as well, of the individual that they pushed off the train, was even more shocking.

"Clearly it sends out a strong signal to, not only Chelsea, but the whole of football, that you cannot be complacent and think the actions you're taking are sufficient to deal with the scourge of racism, sexism, homophobia and anti-Semitism. We've got to do a lot more and not be complacent. We'll support any prosecution.

Ouseley hopes that any conviction will lead to the fans being banned from attending all football matches indefinitely.

"Anyone who can be identified, if they have an association with the club, the club said it will take the strongest action, which would include banning those people from going to Chelsea football matches," he added.

"I would hope it would extend to banning them from going to any football match.

"Chelsea need to make it quite clear, once again, that people who carry their prejudices around, please don't come to football.

"We need to see that reinforced by all clubs, because it's happening right across the country, not just one team.

"These attitudes are attitudes that are in our society and football can play a major part in helping to draw attention to ways in which we need to help people to change their attitudes.

"I think UEFA will inevitably look at it. It happened outside of the game, on a public transport system.

"Football, while it has to deal with those fans in a proper way - and the club is saying that it will - realistically you cannot simply look at it in a footballing context and make UEFA responsible for people who are travelling.

"The responsibility goes to the club and their travelling supporters."